549 results about "Biological filter" patented technology

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The invention discloses a method for treating printing and dyeing wastewater based on an aerobic granular sludge technology, which comprises the following steps: culturing and domesticating aerobic granular sludge: adopting a sequencing batch activated sludge reactor with a large height-diameter ratio, adding high-load simulated printing and dyeing wastewater into the reactor, and starting to culture the aerobic granular sludge; treating the printing and dyeing wastewater by using the aerobic granular sludge: treating the printing and dyeing wastewater by using the cultured and domesticated aerobic granular sludge; carrying out biological aerated filter pretreatment: carrying out starting and biofilm formation by adopting simulated wastewater; advanced treatment with a double-membrane process: treating the effluent with the double-membrane process, wherein ultrafiltration adopts a high-strength hollow fiber membrane module, and the operation mode is an external pressure mode; an anti-pollution membrane assembly with pollution resistance, high desalination rate and high water yield is adopted for reverse osmosis, and by adjusting operation parameters of a double-membrane process, the effluent quality meets the water quality requirement of recycled water in the textile dyeing and finishing industry.

The invention relates to the technical field of water treatment, in particular to a prawn fry raw water biological filter treatment device. According to the technical scheme, the device comprises a pretreatment box, a disinfection box, an adjusting plate, a fine treatment box, a motor and a purification box, a screw is arranged at the output end of the motor, a nut in threaded installation with the screw is arranged at the upper end of the adjusting plate, the outer wall of the adjusting plate is sleeved with an air bag, an air pump is arranged at the upper end of the adjusting plate, and the air pump and the air bag are communicated and provided with an air supply pipe; a pressure relief valve is arranged in the air supply pipe, a disinfection box is arranged on one side of the lower portion of the fine treatment box, sealing gaskets are arranged on the inner wall of the fine treatment box and the outer wall of the purification box, overflow holes are formed in the side wall of the lower end of the purification box, and a filter material layer is arranged in the purification box. Through modular design, the efficiency and economical efficiency of prawn fry raw water treatment are remarkably improved, and the problems that a large-area biological filter cannot flexibly adjust the treatment capacity and is difficult to adapt to different scale requirements are solved.

The invention belongs to the technical field of wastewater treatment and recycling, and relates to a low-pressure ultrafiltration sewage treatment method and device based on bioelectrochemical enhancement and application. The treatment device consists of a water inlet tank, a constant water level water tank, a cathode, a resistor, a membrane assembly, a biological filter cake layer, a pre-filtering layer-anode, an ultrafiltration membrane, a water collecting device, a data acquisition module and a computer. The treatment device is used for treating effluent of a secondary sedimentation tank of a sewage plant and tail water of livestock and poultry breeding wastewater; on the basis of retaining nitrogen and phosphorus resources, deep removal of heavy metals and antibiotics is realized, propagation of resistance genes is inhibited, and safe reuse of nitrogen and phosphorus resources in effluent of sewage plants and tail water of livestock and poultry breeding wastewater can be realized. In the invention, low-pressure ultrafiltration adopts transmembrane pressure difference generated by gravitational potential energy to realize continuous flow filtration, coupled bioelectrochemistry utilizes electric energy generated by biodegradation of organic matters to realize reduction of heavy metals and deep removal of reinforced antibiotics, and the method has the advantages of greenness, low carbon and sustainability.

The utility model provides a biofilter filler support frame capable of being quickly installed, which belongs to the technical field of water treatment and comprises a base and a top plate, a bottom plate for placing a filter plate is arranged in the base, support plates for installing the filter plate are arranged on two sides of the bottom plate, and the support plates are also used for limiting the height of support columns. The four corners of the upper surface of the base are provided with inserting openings for fixing the supporting columns, the supporting columns for fixing and supporting the top plate are arranged in the inserting openings, the four corners of the lower surface of the top plate are provided with through openings for facilitating connection of the supporting columns and the positioning blocks, the through openings correspond to the inserting openings, and the tops of the supporting columns are provided with threaded holes for fixing the positioning bolts. A positioning block used for connecting and fixing the top plate and the supporting column is arranged at the top of the through opening, a threaded hole used for fixing a positioning bolt is formed in the positioning block in a penetrating mode, a positioning bolt used for connecting the positioning block and the supporting column is arranged in the threaded hole, and the positioning bolt is in threaded fit with the threaded hole.

The invention belongs to the technical field of waste gas pollution control, and particularly discloses and provides an efficient composite biological filter bed adaptive filler waste gas treatment method which comprises the step of forming a closed loop system through cooperative operation of a buffer adsorption layer, a biodegradation layer, humidity change signal adjustment and pH balance microsphere quadruple mechanisms. The physical layer buffers the impact load and keeps the airflow uniform; the biological level regulates and controls humidity and nutrients, and high activity of microorganisms is guaranteed; the chemical level immediately neutralizes the acidity and alkalinity of by-products. The humidity sensing film deforms to drive the valve clack to adjust waste gas flow in an unpowered self-feedback mode, the nutrition release layer continuously nourishes flora, and a stable ecological environment is provided for microorganisms through multiple protection. Through physical compression resistance, mechanical anti-blocking and dynamic acid-base balance, the capacity of the system for coping with complex working conditions is jointly improved, it can be ensured that pollutants are efficiently decomposed, the degradation rate continuously and stably exceeds a preset threshold value, and then it can be ensured that the long-term operation efficiency and structural integrity of the system are good.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a cleaning device of a biological aerated filter, which comprises a filter body, and one side of the filter body is provided with a drain outlet; the cleaning mechanism comprises a supporting frame, a scraping plate, a spraying assembly, a rotation driving assembly and a brush cylinder; the driving end of the transverse reciprocating driving mechanism is connected with the bottom of the vertical reciprocating driving mechanism, the driving end of the vertical reciprocating driving mechanism is connected with the top of the supporting frame, the rotating driving assembly is installed on the supporting frame, the driving end of the rotating driving assembly is connected with one end of the brush cylinder, and the top of the spraying assembly is connected with the supporting frame. The spraying assembly is located on the side, away from the sewage draining exit, of the brush cylinder, the spraying end of the spraying assembly faces the brush cylinder and inclines downwards, the upper end of the scraper is connected with the bottom of the spraying assembly, and the scraper is located on the side, away from the brush cylinder, of the spraying assembly; the liquid supply mechanism is arranged on the outer side of the filter tank body, the liquid supply end of the liquid supply mechanism is communicated with the liquid inlet end of the spraying assembly, and the scheme is high in cleaning efficiency.

The technical scheme of the utility model discloses a land-based canvas pool litopenaeus vannamei recirculating aquaculture system which comprises an aquaculture pool, and the edge of the bottom of the aquaculture pool inclines towards the center so as to enable aquaculture water and impurities to converge towards the center to a fish closestool. The settling pond is connected with an outlet of the fish closestool through a drainage pipe, and the fluidized bed is connected with the settling pond through a water guide pipe arranged at the water outlet channel; and the microfiltration part is connected with the fluidized bed and the culture pond through a water conduit and a water return pipe respectively. The bottom of the culture pond is inclined, water is drained from the center of the culture pond and enters the culture pond tangentially, so that vortexes are formed in the culture pond, and residual feed, excrement and the like are quickly concentrated towards the water outlet in the center of the bottom of the culture pond under the action of tangential force of water flow. Through a plurality of water inlet pipes and water outlet pipes, the effect of water quality circulation of the culture pond, the sedimentation pond, the fluidized bed biological filter and the rotary drum type micro-filter is achieved, and the problems that suspended solids and ammonia nitrogen are prone to being generated in a traditional prawn culture technology and the nitrite concentration is continuously increased are solved.

The invention relates to the technical field of biological filter groups, in particular to a low-energy-consumption high-efficiency urban and rural small and micro water body biological treatment device which comprises a sewage inlet pipe, a biological filter group and a sedimentation tank, the biological filter group comprises an anoxic and anaerobic tank, aerobic tanks and an adjusting tank, the aerobic tanks are arranged on the front side and the rear side of the anoxic and anaerobic tank, and the adjusting tank is arranged on the front side and the rear side of the anoxic and anaerobic tank. Regulating tanks are arranged on the left side and the right side of the anoxic and anaerobic tank; by arranging the biological filter tank group, the anoxic and anaerobic tank, the aerobic tank and the regulating tank, a one-step two-cycle treatment mode of sewage can be realized, the nitrogen and phosphorus removal efficiency of the sewage is greatly improved, the energy consumption and sludge output are reduced, the overall blockage risk of the system is reduced, the structure is compact, the occupied area is smaller, and the cost is reduced. The system is high in impact load resistance and meets the low-energy-consumption and efficient decontamination requirements of urban and rural small and micro water bodies.

The invention discloses an integrated household sewage treatment device, and relates to the technical field of sewage treatment, a tank body is internally provided with a pretreatment tank, an adjusting tank and a biological filter, the tank body is connected with a water inlet pipe at a position corresponding to the pretreatment tank, the water inlet pipe is used for introducing to-be-treated sewage into the pretreatment tank, the upper end of the pretreatment tank is communicated with the adjusting tank, and the lower end of the pretreatment tank is communicated with the biological filter; the pretreatment tank can discharge pretreated sewage into the adjusting tank, a water distribution element is arranged in the adjusting tank and can distribute the sewage entering the adjusting tank, a filter material element is arranged in the biological filter, and the upper end and the lower end of the biological filter can be communicated with the adjusting tank. The filter material element can be used for treating sewage in the biological filter tank, the treated water in the biological filter tank can enter the regulating tank, a water outlet pipe for discharging the treated sewage is arranged on the corresponding side wall of the tank body, and the water outlet pipe is arranged close to the upper end of the regulating tank. The sewage treatment device is simple in structure, convenient to operate and good in sewage treatment effect.

The utility model relates to the technical field of sewage treatment equipment, in particular to an electrolytic biological filter system for rapid treatment of overflow pollution, which comprises a bioelectrochemical system and a biological aerated filter system, the bioelectrochemical system comprises a tank body I, a biological anode and a biological cathode are arranged in the tank body I, and the biological anode and the biological cathode are arranged in the tank body II. The biological anode and the biological cathode are connected to a power supply, the biological aerated filter system comprises a tank body II, sewage treated by the tank body I enters the tank body II, an aeration device, a filtering device and a clear water outlet device are arranged in the tank body II, and the biological electrochemical system is coupled with the biological aerated filter through the aeration device, the filtering device and the clear water outlet device. The electrolytic biological filter system for rapidly treating overflow pollution is formed, the rapid electron transfer characteristic of a bioelectrochemical system is fully utilized, the denitrification rate of the biological aerated filter is increased, the treatment time can be greatly shortened under the same denitrification requirement, and the effect of rapidly treating overflow pollution in emergency is achieved.

The invention discloses a firework and cracker hazardous waste recovery treatment method and system, and the method comprises the following steps: a wastewater treatment step: the wastewater treatment step comprises a chemical precipitation step, an A2O biochemical treatment step, a Fenton oxidation step and a BAF biological filter step, and perchlorate, COD and heavy metal are removed; the waste residue treatment step comprises a wet grinding step, a high-temperature digestion step, a flotation step, a hydraulic cyclone separation step, a wet leaching step and a fractional precipitation step, and carbon powder, titanium, barium, aluminum and magnesium resources are recycled; according to a synergistic coupling mechanism, bottom slag generated in the wastewater treatment step is conveyed to the waste slag treatment step for treatment, and filtrate generated in the waste slag treatment step is conveyed to the wastewater treatment step for treatment. The method is used for carrying out harmless treatment and resource recycling on the hazardous wastes of the fireworks and crackers.

The invention relates to the technical field of wastewater treatment, and provides a papermaking wastewater precipitation and recovery device which comprises air flotation equipment and a filter tank, and further comprises a filter cartridge, a wastewater pipe, a backwashing recovery assembly, a biological filter tank and a biological filter assembly, the two ends of the filter cartridge are sealed and rotationally sleeved with bearing supports respectively, and the two bearing supports are symmetrically arranged; a mounting rack is mounted on the filter tank, a bearing bracket is fixedly mounted in the mounting rack, a wastewater pipe is fixedly mounted on the mounting rack, a backwashing recovery assembly is mounted in the filter cartridge, a water distribution tank, a filter area and an overflow area are arranged in the biological filter tank, and a biological filter assembly is mounted in the biological filter tank. The problems that in the prior art, fine fibers, colloids and mixed impurities in waste water are prone to blocking a filtering structure, the waste water treatment process is discontinuous, frequent shutdown is needed for cleaning the filtering structure, and the overall treatment efficiency and stability are low are solved.

The utility model discloses a water inlet oxygen elimination device for an upward flow denitrification biological filter, and belongs to the technical field of biological filters. The device specifically comprises a floating ball (1), a connecting rod (2), an adjusting gate valve (3), a water inlet pipe (4) and a water outlet pipe (5), the water inlet valve is controlled through the floating ball at the upper part of the device, water enters the biological filter at a constant speed, and the height of the floating ball is automatically adjusted along with the flow. And sewage falling is avoided. The falling phenomenon of inlet water is reduced, and dissolved oxygen in the inlet water is reduced. According to the oxygen elimination device, after the upward flow denitrification biofilter is transformed, the consumption of chemicals can be reduced, and the purpose of saving energy is achieved.

The invention provides a sponge city river ecological environment comprehensive treatment and later maintenance intelligent management and control platform, and relates to the technical field of urban water environment treatment. Comprising an Internet of Things sensing layer, the Internet of Things sensing layer is composed of a water quality sensor, a flow monitor and a meteorological station, the multistage ecological purification module comprises a front sedimentation tank, an ecological floating island unit, a biological filter and an artificial wetland, the ecological floating island adopts a modified polyethylene base material to plant stain-resistant aquatic plants, and a biological filler is suspended at the bottom of the floating island; and the intelligent management and control system integrates a dynamic water quality model and an AI algorithm, automatically regulates and controls the aeration equipment, the ecological water replenishing valve and the agent adding device according to real-time data, and realizes dissolved oxygen balance and pollutant reduction of the river channel. Dynamic regulation and control of water quality are achieved through the Internet of Things sensing layer and the AI prediction model, the total nitrogen removal rate is stabilized to be 75% or above, the runoff coefficient in the rainstorm period is reduced to 0.45, and 95% of suspended solids are intercepted.

The utility model relates to a multi-process combined multi-barrier real-time monitoring and reduction system for organic matters in water in a waterworks, which comprises a sedimentation tank, a biological filter tank and a clean water tank which are sequentially arranged between a water inlet and a water outlet, the adsorbent can be added at the front end of the sedimentation tank, the gas-water mixing device is arranged at the front end of the biological filter tank and can be opened and closed, the ultraviolet-advanced oxidation generation device is arranged at the front end of the clean water tank and can be opened and closed, and the detection device is used for carrying out online sampling and real-time detection on a collected water sample. The control system is used for selectively adding an adsorbent, selectively opening and closing the gas-water mixing device and selectively opening and closing the ultraviolet-advanced oxidation device according to a detection result of the detection device, and the control system is used for selectively configuring or opening and closing a configuration for improving the organic matter removal rate according to the detection result of the detection device. Through low-cost multi-process combination, a multi-barrier system for reducing odor substances in drinking water production is constructed.

The invention relates to the technical field of aquaculture, and discloses a factory-like circulating aquaculture system and method for aquaculture, and the system comprises one or more aquaculture units, a biological filtration unit and a water circulation filtration unit. Water in the culture ponds in the culture units flows into the microstrainers through independent water outlet pipes at the bottoms of the culture ponds to be primarily filtered, so that suspended particles such as residual feed and excrement in the water are effectively removed (discharged into the sewage pond); particulate matters such as residual feeds and excrement in water bodies are quickly pressed into the microfilters by the aid of high pressure of the water bodies during drainage at the bottoms of the culture ponds, and accordingly the removal efficiency of suspended particles in the water bodies of the culture ponds can be greatly improved; harmful substances such as ammonia nitrogen and nitrite in the water body are removed, the water quality is further improved, and the problems that an existing system is low in suspended particulate matter treatment efficiency, poor in biochemical treatment effect, high in cost, poor in circulation balance and the like are effectively solved.

The utility model relates to the technical field of wastewater treatment, in particular to a sulfur autotrophic denitrification filter tank device driven by a suspended packed bed. The sulfur autotrophic denitrification filter tank device comprises a regulating tank, a sulfur autotrophic denitrification biological filter tank and a sedimentation tank which are communicated in sequence; the adjusting tank is used for homogenizing the wastewater; a suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, and the sulfur autotrophic denitrification biological filter is used for performing a sulfur autotrophic denitrification reaction to remove nitrate nitrogen in the wastewater; the sulfur autotrophic denitrification biofilter is also connected with a sulfur autotrophic denitrification dosing tank; the settling pond is used for standing and settling the wastewater; a water outlet for discharging treated wastewater is formed in the top of the sedimentation tank. According to the utility model, the suspended biological filler is combined with the sulfur autotrophic denitrification reagent, and the suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, so that the mass transfer efficiency can be improved, and the deep removal of nitrate nitrogen in wastewater is realized.

The utility model discloses an assembled biological filter adopting a filter box and belongs to the field of biological filters. Comprising a biological filter peripheral wall body, a bottom plate, a water inlet pipe, a backwashing gas inlet pipe, a backwashing water inlet pipe, a filter head, a filter plate, a bracket, a filter box, a filter box top box, a water inlet and outlet weir, a water inlet channel, a backwashing gas branch pipe and a backwashing water branch pipe, the filter plate is placed on the bracket and is provided with a filter head; a plurality of filter boxes are placed on the filter plate assembly and are arranged in a one-layer or multi-layer array, the filter plates are densely distributed on the bottommost layer, and a filter box top box is adopted on the uppermost layer; a water inlet pipe, a backwashing air inlet pipe and a backwashing water inlet pipe are arranged on the side surface of the lower part of the tank body; a backwashing gas branch pipe and a backwashing water branch pipe are arranged below the filter plate in the tank body; the water inlet pipe is correspondingly positioned below the filter plate; the bottom of the water inlet channel is communicated with the lower part of the filter plate of the tank body through a water inlet pipe. Filter materials are independently packed, head loss during backwashing is reduced, and operation and maintenance are convenient and simple.

The invention belongs to the technical field of environmental governance, and particularly relates to a waste gas treatment system, application thereof and a treatment method for malodorous gas generated by a household garbage landfill. The waste gas treatment system provided by the invention comprises an alkali washing spray tower, a biological filter bed of which a bottom first gas inlet is communicated with a top outlet of the alkali washing spray tower, a deodorization spray tower of which a bottom gas second inlet is communicated with a top outlet of the biological filter bed, and an emptying pipe communicated with a top outlet of the deodorization spray tower. When the waste gas treatment system is used for treating malodorous gas, the malodorous gas can be subjected to three-step purification treatment of primary gas-liquid mass transfer, microbial degradation and secondary gas-liquid mass transfer, various harmful substances in the waste gas can be efficiently removed, meanwhile, the system is not prone to leakage, continuous treatment can be achieved, and the waste gas treatment efficiency is improved. And the secondary pollution is reduced while the treatment effect is ensured.

The invention relates to a method for preparing a biological filter material based on municipal sludge and traditional Chinese medicine waste residues, and belongs to the field of solid waste resource utilization. According to the method, the crude fiber characteristic of the traditional Chinese medicine waste residues is utilized, biochar is prepared through a pyrolysis method, the biochar is mixed with dried, crushed and screened municipal sludge and the like and then sintered, dipping and biofilm culturing treatment are conducted, and finally the biological filter material is obtained. The method has the advantages that the adsorption performance of the filter material is enhanced, harmless, reduction and resource utilization of the municipal sludge and the traditional Chinese medicine waste residues is realized, and the method conforms to the solid waste treatment principle in China and has a wide development prospect.

The invention discloses a multi-biological aerated filter linkage backwashing control method and application thereof, and belongs to the technical field of sewage treatment.According to the backwashing control method, original independent sequential backwashing of multiple biological aerated filters is improved into linkage backwashing of two biological aerated filters, the backwashing efficiency is greatly improved, and the backwashing time is shortened. The problems that the backwashing process is too long when the multi-aeration biological filter is cleaned, and a backwashing fan and a backwashing pump have idle time and are frequently started and stopped can be solved, and the pollution and blockage degree of a filter material in the flushed filter can be pre-judged according to the current value characteristic of the backwashing fan in the first half time of the gas flushing stage. According to the backwashing control method, the gas washing stage time and the water washing stage time are dynamically adjusted, the backwashing effect can be guaranteed, incomplete backwashing or excessive backwashing is avoided, and the backwashing control method has wide application prospects in the field of sewage treatment.

The invention relates to the technical field of water treatment, and discloses a multi-stage linkage water quality purification treatment method for drainage basin treatment, which comprises the following steps: reducing the flow rate of drainage basin runoff entering a pretreatment pool by using a stepped energy dissipation ridge; an overflow weir is arranged between the pretreatment pool and the biochemical purification unit, runoff with the flow lower than a threshold value is guided to the biochemical purification unit according to a water level pressure head, and excessive flow is guided to a bank zone ecological buffer zone; enabling the runoff to sequentially flow through the anaerobic biological filter tank and the aerobic ecological tank, and generating gravity flow by utilizing a unit elevation difference; according to the invention, the self-adaptive flow distribution is realized by utilizing a water level physical signal, the scouring stripping of a microbial film of a biochemical unit by a dynamic load is effectively prevented, and the stability of the effluent quality of the system is maintained through kinetic energy level conversion.

The invention discloses a method for monitoring growth and renewal of a biological membrane in a denitrification deep bed ceramsite filter tank, and belongs to the technical field of water treatment. On the basis of the quality of inlet and outlet water of the biological filter, the growth degree of the biological membrane, the blockage degree of the filter and the blockage coefficient of a filter layer of the filter are calculated, so that the growth and renewal state of the biological membrane in the filter is relatively accurately judged; and the filter operation stages are divided based on the fitting slope of the filter layer blockage coefficient of the filter, so that the blockage degree of the filter can be more accurately judged, and a reasonable backwashing period is set according to the blockage degree. Meanwhile, the backwashing period is optimized based on the normal distribution of the effluent turbidity, so that the backwashing time can be accurately controlled, the backwashing is prevented from being too frequent or insufficient, the energy consumption is saved, and the operating efficiency of the filter tank is guaranteed.

The invention discloses integrated aquaculture tail water treatment equipment and method, and belongs to the technical field of aquaculture tail water treatment. The interior of the box body is divided into a plurality of units by partition plates, and a primary filtering self-cleaning unit, a secondary filtering and disinfecting unit, a composite biological membrane treatment unit, a deep physical-biological filtering unit and a modular composite adsorption unit are sequentially arranged in the flowing direction of a water body; the primary filtering self-cleaning unit is used for primarily filtering tail water; the secondary filtering and disinfecting unit is used for disinfecting and further filtering the water body; the composite biological membrane treatment unit is used for treating a water body by utilizing a nitrification-denitrification composite microbial membrane; the deep physical-biological filtering unit is used for treating a water body by utilizing a rattan cotton filtering medium which is stacked in a multi-layer manner; the modularized composite adsorption unit is used for adsorbing a water body. The system has the advantages of high integration, intelligent self-control, convenient maintenance, stable operation and the like.

The utility model relates to sewage treatment technical field proposes a kind of biological deodorization device for sewage treatment station, filtering mechanism, filtering mechanism includes first mounting bracket, and electric push rod is installed on first mounting bracket, and the output end of electric push rod is connected with installation frame, and filter screen is installed on installation frame;Cleaning mechanism, cleaning mechanism includes second mounting bracket, and multiple brushes are connected on second mounting bracket, and the bottom end of second box body is installed with first motor, and the output end of first motor is connected with second mounting bracket;Fan is installed to the top end of second box body, and the input end of fan is communicated with second box body, and the output end of fan is communicated with first box body, the device is rotated by second motor drive installation ring, to adjust the position of first biological filter bed and second biological filter bed, reduce replacement step, improve use convenience, by first motor drive multiple brushes rotation, to carry out cleaning to particulate matter on filter screen, improve filtration effect.

The utility model discloses a multistage deodorization device of a biological filter, which relates to the technical field of waste gas treatment and comprises a treatment tank, the filter box is arranged on the outer surface of the treatment tank and is used for filtering; the sealing cover is arranged on the upper surface of the treatment tank; the heating unit is arranged in the treatment tank and is used for heating; the stirring unit is arranged in the treatment pond and used for stirring, the inner wall of the treatment pond is fixedly connected with a partition plate, and the interior of the filter box is detachably connected with a multi-stage filter screen plate. According to the utility model, the heating box, the circulating pump, the connecting pipe, the circulating heating pipe and the temperature controller are matched with one another to perform auxiliary heating on the interior of the treatment tank, so that microorganisms in the biological reaction tank are facilitated to decompose waste liquid; the waste liquid in the treatment pond can be conveniently and slowly stirred by adopting the mutual cooperation of the treatment pond, the filter box, the hydraulic cylinder, the limiting sliding rod, the moving plate, the connecting plate, the limiting block and the stirring roller, so that the decomposition efficiency of deodorization can be improved.

The invention discloses a river crab-snail breeding method based on space-time isolation and micro-flowing water circulation, and relates to the technical field of aquaculture, the key points of the technical scheme are that an isolation barrier is arranged in a river crab breeding pond, the river crab breeding pond is divided into a snail breeding area and a river crab main breeding area, and a water passing structure is arranged on the isolation barrier; a three-dimensional inhabiting base frame is arranged in the snail breeding area; generating directional water flow by utilizing oxygenation equipment to drive water in the main river crab breeding area to flow back after being filtered and purified by the snail breeding area; seed snails are put into the snail breeding area, and the snails grow and breed by feeding nutrient substances in the water body of the main river crab breeding area; collecting finished snails from the snail breeding area regularly and transferring the finished snails to the main river crab breeding area for feeding of the river crabs; in the river crab fattening period, the snail breeding area is opened, and the river crabs are allowed to freely eat the remaining snails. By means of the method, it can be guaranteed that snail populations rapidly breed to form a high-density biological filter bed, high-quality active protein bait can be provided for river crabs, and the win-win situation of water purification and feed cost reduction is achieved.

The utility model belongs to the technical field of domestic sewage treatment biological filter beds, and particularly relates to an integrated active biological filter bed for centralized treatment of domestic sewage, which comprises a base and a water-oil separator, a sedimentation tank is arranged at the top of the base, a water inlet pipe is arranged on the left side wall of the sedimentation tank, a screen is arranged on the inner wall of the water inlet pipe, and a water outlet pipe is arranged on the water inlet pipe. A water pump is arranged at the top of the sedimentation tank, a water pumping pipe is arranged at the top of an inner cavity of the sedimentation tank, one end of the water pumping pipe is connected with the bottom of the water pump, and a connecting pipe is arranged at the top of the water pump. Therefore, the filter capacity is improved, the growth and metabolism of the biological filter bed are facilitated, and the service life of the biological filler is greatly prolonged.

The utility model discloses a biological filter wall treatment device which is laid along the edge, close to a human activity area, of a natural water body, the biological filter wall treatment device comprises a first wall body and a second wall body, the first wall body and the bank side of the natural water body form a first treatment cavity, and first filler is laid in the first treatment cavity; a second treatment cavity is formed by the second wall body and the first wall body, a second filler is laid in the second treatment cavity, and a plant layer is arranged above the second filler; the first wall body is provided with a first water outlet for communicating the first treatment cavity with the second treatment cavity, and the second wall body is provided with a second water outlet for communicating the second treatment cavity with a natural water body. The biological filter wall can solve the technical problems that an existing biological filter wall is inconvenient to clean and high in cleaning frequency.